What Makes the 14kW Dual-Gun AC Charger Mainboard More Expensive Than the 7kW Version? A Detailed Breakdown of Power Module and Load Balancing Capabilities

1. Power module differences

• 14kW Dual Gun Mainboard: The 14kW dual gun AC charging pile mainboard employs power devices with higher integration levels. These power devices have a power rating capable of meeting the total output requirement of 14kW, and can flexibly distribute power to both charging guns through internal control circuits. This integrated power module offers advantages in terms of cost, space occupancy, and flexibility in power distribution.

• 7kW Mainboard: The power module of the 7kW mainboard is relatively simple, primarily designed for single-gun 7kW output.

2. Differences in load balancing capabilities

• 14kW Dual-Gun Mainboard: Equipped with an intelligent power distribution algorithm, it dynamically allocates the total 14kW power to two charging guns based on the vehicle connection status and battery condition. For example, when only one vehicle is connected, the mainboard can allocate the full 14kW to that single charging gun. When two vehicles are connected simultaneously, the mainboard can reasonably distribute the power to both charging guns according to their needs, such as 7kW + 7kW or 8kW + 6kW.

• 7kW Mainboard: The 7kW mainboard lacks this dynamic power distribution function and can only provide a fixed 7kW power output to a single charging gun.

3. Cost Variance

• 14kW Dual Gun Mainboard: Due to the adoption of higher-integration power modules and more complex control circuits, the cost of the 14kW dual gun mainboard is relatively high. Additionally, the dual gun mainboard needs to support more functions, such as dual gun charging and intelligent power distribution, which further increases its cost.

• 7kW Mainboard: The design of the 7kW mainboard is relatively simple, resulting in lower costs.

4. Differences in Usage Scenarios

• 14kW Dual-Gun Mainboard: More suitable for public areas such as residential parking lots, shopping malls, and company campuses, enabling simultaneous service for two vehicles to enhance charging pile utilization and reduce queuing delays.

• 7kW Mainboard: More suitable for home users, with simple installation and low cost, ideal for charging a single vehicle.

5. Other Functional Differences

• 14kW Dual Gun Motherboard: In addition to the dual gun charging function, it also features enhanced communication capabilities, such as 4G online communication, supporting online control and payment functions via QR code scanning through WeChat, Alipay, or mini-programs on mobile phones.

• 7kW mainboard: Typically supports only single-gun charging, with relatively simple functionality.

Summary

• The 14kW dual-gun AC charging pile mainboard is more expensive than the 7kW mainboard, primarily due to its higher-integration power module, intelligent load-balancing capability, and support for more complex usage scenarios and additional features. These characteristics give the 14kW dual-gun mainboard greater advantages in public settings, but they also contribute to increased costs.

The AC charging pile motherboard produced by Xincheng Technology is meticulously crafted with six core modules, which work in harmony to ensure high-quality, safe, and stable performance. Welcome to inquire and purchase!